Get Mapped Object From Alias Object

Hi Peter,



The following code was posted by Automated's Support a long time ago when there was no WaitAliasedChild method in the Aliases object.

The code may not work now, but maybe it might inspire you with some ideas...



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 The following script gets an object by its full name from the Aliases tree. I hope you will find the code useful:



 [JScript]

 function Test()

 {

   var obj;



   obj = WaitAliasedObject("Aliases.Sys.MainEdit", 5000);

   if (!obj.Exists)

     Log.Error("Object was not found");

 }



 function WaitAliasedObject(alias, timeout)

 {

   var mappedName;



   mappedName = GetMappedNameByAlias(alias);

   if (mappedName == "") {

     Log.Warning("A mapped name for the " + alias + " was not found");

     return Utils.CreateStubObject();

   }



   return WaitObjectByMappedPath(Utils.CreateStubObject(), mappedName, timeout);

 }



 function WaitObjectByMappedPath(parentObj, path, timeout)

 {

   var dotPosition, currentItemName, lowPath, startTime, childObj, newTimeout;



   if (path == "")

     return Utils.CreateStubObject();



   dotPosition = path.indexOf(".");

   if (dotPosition < 0) {

     currentItemName = path;

     lowPath = "";

   }

   else {

     currentItemName = path.substr(0, dotPosition);

     lowPath = path.substr(dotPosition + 1);

   }



   startTime = Win32API.GetTickCount();

   if (!parentObj.Exists) {

     dotPosition = lowPath.indexOf(".");

     if (dotPosition < 0)

       return Utils.CreateStubObject();

     else {

       currentItemName = currentItemName + "." + lowPath.substr(0, dotPosition);

       lowPath = lowPath.substr(dotPosition + 1);

     }

     childObj = eval(currentItemName);

   }

   else

     childObj = parentObj.WaitNamedChild(currentItemName, timeout);

   if (!childObj.Exists)

     return Utils.CreateStubObject();



   if (lowPath == "")

     return childObj;

   else {

     newTimeout = timeout - (Win32API.GetTickCount() - startTime);

     if (newTimeout < 0)

       return Utils.CreateStubObject();

     else

       return WaitObjectByMappedPath(childObj, lowPath, timeout);

   }

 }



 function GetMappedNameByAlias(alias)

 {

   var i, tcNM, nmFilePath, items, logicalNodes, aliasedNode, mappedNode, mappedName;



   nmFilePath = Project.Path + "NameMapping\\NameMapping.tcNM";



   tcNM = Sys.OleObject("Msxml2.DOMDocument.4.0");

   tcNM.async = false;



   if (!tcNM.load(nmFilePath)) {

     Log.Warning("Cannot load the " + nmFilePath + " NameMapping file");

     return "";

   }



   items = tcNM.selectNodes("//Node[@name='logical nodes']");

   if (items.length != 1) {

     Log.Warning("An invalid NameMapping file");

     return "";

   }

   logicalNodes = items.item(0);



   aliasedNode = GetAliasNode(logicalNodes, alias);

   if (aliasedNode == null) {

     Log.Warning("The " + alias + " alias was not found");

     return "";

   }



   items = aliasedNode.selectNodes("Prp[@name='owner' and @value]");

   if (items.length != 1) {

     Log.Warning("An invalid NameMapping file");

     return "";

   }



   return GetMappedNameByID(logicalNodes, items.item(0).attributes.getNamedItem(

"value").nodeValue);

 }



 function GetMappedNameByID(tcNM, objectID)

 {

   var items, nmData, nmNode, mappedName;



   items = tcNM.selectNodes("//Node[@name='data']");

   if (items.length != 1) {

     Log.Warning("An invalid NameMapping file");

     return "";

   }

   nmData = items.item(0);



   items = nmData.selectNodes("//Node[@name='" + objectID.toLowerCase() + "']");

   if (items.length != 1) {

     Log.Warning("An invalid NameMapping file");

     return "";

   }

   nmNode = items.item(0);



   mappedName = "";

   do {

     if (mappedName == "")

       mappedName = nmNode.selectSingleNode("Prp[@name='name' and @value]").attributes.getNamedItem("value").nodeValue;

     else

       mappedName = nmNode.selectSingleNode("Prp[@name='name' and @value]").attributes.getNamedItem("value").nodeValue + "." + mappedName;

     nmNode = nmNode.parentNode.parentNode;

   } while(nmNode.attributes.getNamedItem("name").nodeValue != "data");



   return "NameMapping." + mappedName;

 }



 function GetAliasNode(parentNode, path)

 {

   var dotPosition, currentItemName, lowPath, items, aliasedNode;



   if (path == "")

     return null;



   dotPosition = path.indexOf(".");

   if (dotPosition < 0) {

     currentItemName = path;

     lowPath = "";

   }

   else {

     currentItemName = path.substr(0, dotPosition);

     lowPath = path.substr(dotPosition + 1);

   }



   items = parentNode.selectNodes("Prp[@name='name' and @value='" + currentItemName + "']");

   if (items.length > 0) {

     if (lowPath == "")

       return parentNode;

     items = parentNode.selectNodes("Node[@name]");

     for(i = 0; i < items.length; i++) {

       aliasedNode = GetAliasNode(items.item(i), lowPath);

       if (aliasedNode != null)

         return aliasedNode;

     }

   }

   return null;

 }

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